Repackable adjustable oil filter cartridge



Nov. 9,` 1948. c. M. BoLsE-R REPACKABLE ADJUSTABLE OIL FILTER CARTRIDGE 2 Sheets-Sheet 1 Filed Nov. 23. 1944 INVENTOR. /zzz .9a/.rer

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Nov. 9, 1948. c. M. BOLSER v REPACKA'BLE ADJUSTABLE oIL FILTER CARTRIDGE Filed Nov. 23. 1944 2 Sheets-Shed 2 INVENTOR. 0

Patented Nov. 9, 1948 REPAcKafnLE ADJUSTABLE OIL FILTER CARTRIDGE clark ivi. Baiser, cedar Falls, Iowa Original application December 14, 1940, Serial No.

370,096. Divided and this application November 23, 1944, Serial No. 564,819

My present invention relates to an oil filter cartridge wherein the filtering material is repackable and wherein the cartridge itself is adjustable to t in different sizes of casings. as for passenger car operation, small truck operation and large truck operation, depending upon the quantity of oil in the oil system of the engine, the present application being a division of my copending application, Serial No. 370,096, flled December 14, 1940, now Patent No. 2,364,617.

One object of the invention is to provide a means whereby the ltering material may be removed irom a used oil lter cartridge and discarded and fresh material packed into the cartridge in a minimum of time and with an expense equal only to the cost of the filtering material itself, which may be ordinary waste of the variety formed from cotton fibers and usually used for wiping oil and grease from machinery.

Another object is to provide an oil filter cartridge which consists of a pair of ltering material containers each having an open end, which containers telescope together with sufllcient telescoping extent that each may be partially lled with a quantity of filtering material and the containers thereupon telescoped together for enclosing the filtering material and compacting it to the desired extent, after which the cartridge may be readily placed in the usual oil filter casing to perform its intendedfunction.

Still another object is to provide a repackable cartridge which may be adjusted to any one of several sizes by slipping a spring ring into the proper groove of one of the containers so as to limit the telescoping movement, the containers being subsequently filled with the proper amount of ltering material to suit'the size to which the cartridge has been adjusted; the cartridge, due toits adjustment, being thereby usable in any one of a plurality of sizes of lter casings.

A further object is to provide a cartridge of the general character-,above described with a self contained sump to catch debris or sludge before it passes through the ltering material of the cartridge.

Still further objects are to provide an oil filter wherein a change in the size of a lid may change the size of the filter tollaccommodate a different size of filter cartridge; to provide an insert in'the form of an oil distributor where it is desirable to discharge the oil into the ltering material at the center of its mass;" to provide means for associating a gasket with a cartridge ofthe metal container type for replacement in place of the usual sock type of ltercartridge; and to pro-4 Claims. (Ci. 210-`-131) vide a. telescopically adjustable, lstrainer type oil filter cartridge wherein oil flows from the outside toward the inside, with means to insure proper flow of oil Vthrough the perforations of the telescoping parts of the cartridge.

The foregoing, other and .further objects of my present invention will be apparent to those skilled in the art to which this invention appertains, by reference to the following description, accompanying drawings and appended claims. Embodiments of the invention are illustrated in the accompanying drawings, wherein the views thereof are as follows:

Figure 1 is a vertical sectional view through an oil filter embodying my invention and showing my repackable adjustable oil lter cartridge therein;

Figure 2 is a, similar sectional view showing the cartridge adjusted to a different size and the caslng of the oil iilter made smaller by the substitution of another size of lid on the casing;

Figure 3 is a sectional view through a modified form of the cartridge showing a central oil distributor and the cartridge at maximum adjustment;

Figure 4 is a similar view showing the cartridge of Figure 3 at minimum adjustment;

Figure 5 is a sectional view through an oil filter showing a simplified type of my repackable oil filter cartridge omitting the adjusting feature;

Figure 6 is a sectional v iew through another oil filter of the type usually receiving a filter sock as a repackable cartridge, with my cartridge replacing the sock type cartridge;

Figure 7 is a sectional vlew through a iilter cartridge of my repackable and adjustable type designed for a strainer type of filter wherein oil enters from the outside and is discharged from the inside of the cartridge;

Figure 8 is a diagrammatic view showing the upper container of the lter cartridge of Figure 1 packed with a quantity of filtering material;

Figure 9 is a similar view showing the lower half of the cartridge packed ywith filtering material and showing by dotted lines the upper part of Figure 8 associated with the lower part before telescoplng the parts together, and

Figure 10 is a view similar to Figure 9 showing how the cartridge of Figures 3 and 4 is repacked.

On the accompanying drawings I have used the reference character C to indicate a lter casing and L a lid therefor in Figure 1. In Figure 2, the casing C has a lid L' of less depth, so that the lter casing is smaller and the entire filter therefor of less capacity than the arrangement shown in Figure 1. The lid L is retained on the casing C by a tie rod IIJ having an oil inlet I2 in the lower endl thereof and communicating with a bore I3. The upper end oi.' the tie rod is threaded to receive a tubular nut I4 carried by the lid L, whereby the casing and lid are held assembled. A gasket I5 is provided between the casing and the lid and a gasket I6 is provided between the lid and the head of the tubular nut I4 to prevent leakage. The casing C is provided with an oil outlet I2a.

The difference of the lid L of Figure 2 from the lid L of Figure 1 is that it is of less depth and the tubular nut I4a need not be Aof as great length. This arrangement permits -the use of one size of casing C and diierent sizes of lids to provide diiferent sizes of filter casings, thus cutting down the size of the dealers stock.

On the tie rod Ill, I provide my repackable adjustable oil lter cartridge comprising a lower container I1 and an upper container i8. The containers I1 and I8 are open ended, with their open ends toward each other when the containers are telescoped together. A quantity of iiltering material I9 is provided in the container I1 and a similar quantity of ltering material 2li is contained in the container I8. The parting line between these quantities is shown at 2|.

The container I1 has an inwardly directed bead 24e adjacent its lower end, on which a perforated partition plate 24a rests. The plate 24a provides below the bead of filtering material a sludge collecting space 24.

The containers I1 and I8 telescoping together as they do may be adjusted for different quantities of filtering material I9--2IL For instance. in Figure 1 the adjustment is maximum, and in Figure 2 it is minimum. To limit -the telescop ing movement, a c-shaped ring 25 formed of spring steel Wire with its break shown at 25a is movable into any one of a plurality of inwardly directed beads 26. The iilter cartridge may thus be initially adjusted for the proper size when installed in a given filter casing, and thereafter when repacked and the containers l1 and I8 are telescoped together to their limit Aas determined by the wire ring 25 they will return to that size.

. The type of filter shown in Figures 1 and 2 permits entry of oil from the bore I3 to a settling or sludge space 24, through a port 21 and through a port 28 in a tube 29 carried by the container I1 at its center. The tube 29 .telescopes over a tube 30 carried at the center oi the container I8. An oil-tight flt between the telescoping tubes 29 and 30 is provided by a constriction 3l of the tube 29.

The top of the sludge space 24 defined by a plate 24a has perforations 24h therein.

The nlter cartridge is provided with gaskets 32 and 33 at its lower and upper ends contacting with a collar 34 and a washer 35, respectively. The collar 34 is part of a by-pass iitting which includes a. spring biased check valve 36. The intake side of the check valve 36 communicates through a port 31 with an annular groove 38 in theA tie rod I0, which in turn communicates through a port 39 with the bore I3. An outlet from the check valve 36 is provided through a passage 36a in an adjusting screw 36h. The washer is carried by a wing nut 40 which screws onto the `threaded portion oi the tie rod Ill and slides the collar 34 downwardly against the bias of a spring 4I under the collar until the coils of the springs are closed.

The arrangement just described permits a v"visible test" to determine whether a illter car tridge, after it has been repacked, operates properly. The nut 40 retains the cartridge in operating positionand the motor may be started. whereupon if the cartridge performs its filtering operation properly the oil will bubble up through perforations 42 formed in the top of the container I8 and run down the outside of the cartridge to be discharged through the outlet i2a. This test may be performed while the lid L is removed, and thus the service station attendantlmay accurately determine the workability of the filter before closing the casing C.

With respect to repacking the filter cartridge, Figure 8 illustrates how the top container I9 may be packed with substantially half of the illtering material Intended to be used for the repacking operation. Figure 9 shows by solid lines how the lower container vI1 may be similarly packed. After the containers I1 and I8 have been packed with the filtering material, the container I8 is inverted to the dotted position of Figure 9 with the telescoping parts associated with each other. The containers may then be forced together to the limit of telescoping movement as determined by the position of the ring 25, whereupon the filtering material is compacted to the proper! degree. The proper predetermined amount'oi iltering material of course is initially placed in the containers to secure the proper compaction when the containers are telescoped together with substantially equal amounts of the material in each container.

In Figures 3 and 4, I show a filter cartridge having many parts corresponding to the parts already described in connection with Figures l and 2. Such parts accordingly bear the same reference numerals. The additional feature in these two figures is an oil distributor consisting of a tube 44 and a pair of discs 45. The discs 45 provide a distributor space between them and have perforations 45 to permit discharge of oil in both upward and downward directions. The tube 44 has an opening at 41 to aiord communication with the space within the tube 44 surrounding the tube 29. The tube 29 has an opening 48 to communicate oil from the bore I3 of the tie rod I0 through the port 21 and into the space between the tube 29 and the smaller tube 30.

The tube 44 has a construction at 49 to lit the tube 29, and another construction at 50 to fit the tube 30. This arrangement permits considerable leeway for telescoping of the tubes 29, 30 and 44 relative to each other and yet secure proper oil flow from the port 21 of the tie rod to the perforations 46 of the distributor discs 45. For instance. maximum adjustment of the oil filter cartridge is shown in Figure 3 and minimum adjustment in Figure 4, and it is obvious at each adjustment that oil flow is possible. In Figure 4,

the spring 43 is omitted.

In each position of adjustment, it is desirable that/the distributor discs 45 assume a substantially central position between the upper and lower ends of the cartridge. This is accomplished by placing half of the illtering material in the container I1, as shown by Vsolid lines in Figure 10, then placing the distributor 44-45 in position, and then the upper container I8 with its half of the filtering material in position as shown by dotted lines. Thereafter. the containers may be telescoped together to their limit of telescoping movement as determined :by the ring 25.

In Figure 5, I have shown a simplified arrangement of my repackable oil filter cartridge from which the adjustable feature has been omitted. The container I8 has but a single bead 26 to receive the ring 25 for limiting the teleseoping movement. The oil filter casing is shown at C' and has a lid L threaded thereon with a spring of the openings as a result of such a possibility is y. immaterial.

I tion of telescoping movement they will be: open I interposed between the lid and the cartridge.

The cartridge of this figure does not have the settling space 24 of Figure 1 but has rather a perforated bottom member I1a to receive oil from the inlet l2. The oil passes up through the perforations 42 of the top of the cartridge and out through the outlet I2a, as in Figure 1.

In some filters, a casing such as C" of Figure 6 is provided and is adapted to receive a sock type of filter cartridge consisting of a filter mass contained in a fabric cover. After a cartridge of this type has been compressed into position to avoid oil leakage around its periphery and then used for a while, it can be removed only by cutting it up and digging it out of the casing. In Figure 6, I show a filter cartridge of my repackable type which may be substituted for the sock l type cartridge. My cartridge is of the same general construction as described in connection with Figures 1 and 5, with the addition -of a restricted portion I1b `of the container I1 having an lnclined shoulder I'Ic. A ringlike gasket 52 surrounds the restriction I1b and is adapted to be forced against an inclined shoulder 53 of the casing C" for the purpose of providing a sealing engagement, the gasket being expanded as the filter cartridge is forced downwardly as by the spring 5I. Thus a sealing engagement is provided between my cartridge and the casing C".

In Figure 7, I show my cartridge adapted for that type of filtering operation wherein the oil flows inwardly from the outer wall of the cartridge toward the center tubes thereof; The containers I1 and I8 and the tubes 29 and 30 of Figure 1 are modifiedto the extent that the telescoping outer walls of the containers are perforated as at 53 and 54, and the tubes are perforated as at v55 and 56. Also, the outer wall of the container I8 is 4provided with outwardly struck annular beads 51 adapted to space the telescoping walls of the containers from each other to permit oil to flow between them from the openings 53 to the openings 54. Two of the instrucl: beads 26 are provided for adjustment, and the adjusting ring` for selective coaction with them is indicated -at as in Figure 1.

In a filter cartridge of this type, teleseoping the two containers together where oil must flow through the teleseopzng walls presents the problem of either making an arrangement for acto eachother, as obvious from an inspection of the drawing. l

In order to prevent channeling through the fltering material I9 and 20, after the container I1 has been filled (as in Figure 9), a spring may be pla-ced thereon which will compress to the position shown in Figure 1 when the filtering material containers are. telescoped together. The spring 43- tends to keep the filtering material properly compacted instead of letting it gravitate to the bottom of the filter cartridge after some use of the filter. This I have found effectively prevents the undesirable condition of channeling through the filtering material. When the oil distributor of Figure 3 is used two of the springs 43 are provided, one placed below the d istributor discs and the other above them.

It is preferable to provide a bail such as indicated at 58 on the filter cartridge to facilitate.

removal thereof. The bail 58 has terminal ends bent inwardly and pivotally connected in brackets 59 secured to the top of the cartridge. The bail may normally assume a supine position, as shown in Figure 1, or an elevated position, as

shown by dotted lines in Figure 2, for convenience i" in removal of the cartridge.

From the foregoing description, it is obvious` that I have provided an oil filter cartridge which is both adjustable and repackable.` This elimi nates the necessity of carrying several sizes of oil filter cartridges in stock and cuts down the expense of replacement to a minimum, inasmuch as the only expense necessary for replacement is the filtering material itself, which isquite inexpensive. 'I'he job of repacking is simplified to a minimum, and by making the containers I1 and I8 so that they telescope for a considerable distance, `the filtering material may be divided and placed in them and then compacted by telescoping them together, without any possibility of the filtering material squeezing out at undesirable points.

curately aligning the holes with each other or result, while oiisetting of the openings 53 by different spacing from that of the beads 51 insures that even if one series of the openings are in registry with the beads (as the upper series in Figure '7), the remaining openings will be free for oil flow. Thus the containers I1 and I8 may be telescoped together without the necessity of aligning the holes 53 and 54 and in such manner as to permit the overall height of the cartridge to be increased or decreased slightly Without interfering with the oil flow through the openings 53 and 54. Sometimes when the cartridge is installed, the limiting ring 25 might not be moved its full extent, and the possibility of non-registry Having .described certain specific embodiments of my invention together with the operation thereof, I desire it to be understood that these forms are selected merely for the purpose of facilitating disclosure of he invention rather than for the purpose of limiting the number of forms which it may assume. It is to be further understood that various modifications, adaptations and alterations may be applied to the specific forms disclosed to meet thev requirements of practice without in any manner departing from the spirit and scope of the present invention except as set forth in the claims appended hereto, which are drawn to the modifications of the invention shown in Figures 3 to 7, whereas the claims in the parent application are directed to Figures 1 and 2 and to certain features oi the other figures which are -common to all of the figures.

I claim as my invention and desire to secure by Letters Patent of the United States:

1. In a rcpackable, adjustable oil filter cartridge having an inlet and an outlet, a pair of filtering .material cup-shaped containers each having an ing tubes secured thereto, said tubes being disposed at the centers of saidv containers to adjustably telescope relative to each other and each container being packed with a separate quantity of filtering material surrounding said tubes, an oil distributor including a tube for adjustably telescoping over said first tubes, aihollow perforated distributor member positioned between said two quantities of filtering material and secured to said last tube, and means affording passage of oil from said inlet through one of said container tubes and through said tube of said oil distributor, said oil then passing through the perforated distributor and through the filtering material to the outlet, all of said tubes being of` a size relative to each other as to permit the passage of oil between them and having contracted ends to providesubstantially oil-tight connections between the tubes.

2. In a repackable'oil filter cartridge having an inlet and an outlet, a pair of cup-shaped filtering material containers each having an open end, at least one of said containers being perforated, said containers being telescoped together, said containers each having a tube secured thereto, said tubes being disposed at Ithe center of said containers to telescope relative to each other and each container being packed with a separate quantity of filtering material surrounding said tubes, an oil distributor including a tube for telescoping over said first tubes, a hollow perforated distributor member secured to said last tube to be positioned between said separate quantities of filtering material, and means affording passage of oil from said inlet through one of said container tubes and through said tube of said oil distributor, said oil then passing through the perforated distributor and V Number distributor member secured to said last tube and 4. In a repackable, adjustable oil filter car-V tridge including an inlet and an outlet, a pair of filtering material containers each havingan open end and a closed end, at least one of said con tainers being perforated, said containers being" to be positioned between said separate quantities of filtering material, and means aifording passage of oil from said inlet through one of said container tubes and through said tube of said oil distributor, said oil then passing through said perforated distributor and the filtering material to said outlet, all of said tubes being of a size relative to each other as 4to permit the passage of oil between them.

5. In a repackable oil filter cartridge including an inlet and an outlet, a pair of filtering material containers each having an open end and a closed end, at least one of said containers being perforated, said containers being telescoped together, said containers having tubes secured thereto and disposed at their centers to telescope relative to each other and each container being packed with a separate quantity of filtering material surrounding said tubes, an oil distributor including a tute for telescoping over said first tubes and a -hollow distributor member secured to said last tube and adapted to be positioned between said separate quantities of filtering material, and means affording passage of cil from said inlet through one of said container tubes and through said tube of said oil distributor, said oii then passing through said perforated distributor and the filtering material to said outlet.

CLARK M. BOLSER.

REFERENCES CITED The following .references are of record in the file of this patent:

UNITED STATES PATENTS Name Date 515,769 Harris Mar. 6, 1894 2,153,062 Harlan et al 1- Apr. 4, 1939 2,158,512 Layte et al May 16, 1939 2,201,418 Williams et al May 21, 1940 2,247,445 Long July 1, i941 2,320,990 White June 8, 1943 2,364,617 Bolser Dec. 12, 1944 

